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題 名 | 潛體結構物受波浪作用之流場數值模擬=Numerical Simulations on Water Waves Travelling Over a Submerged Obstacle |
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作 者 | 蘇怡中; 黃榮鑑; | 書刊名 | 力學 |
卷 期 | 16:1 2000.06[民89.06] |
頁 次 | 頁1-9 |
分類號 | 440.137 |
關鍵詞 | 波浪; 潛體; 黏性; 數值; Water wave; Submerged obstacle; Viscous; Numerical; |
語 文 | 中文(Chinese) |
中文摘要 | 本文以有限差分之數值方法來求解完整的Navier-Stokes 以及連續方程式,並進一步探討前進的週期波流過潛置方形障礙物所引起流場分離 (separation) 效應。針對波形的變化、以及流場速度,在非碎波的情況下加以探討。本文數值模式的計算結果和實驗的量測比較,顯示在不同測位置的波形變化吻合度良好。研究結果顯示,流場分離區的形成和波浪流經障礙物的傳遞有密切的關係,因此導至不同的渦漩形態。 |
英文摘要 | In this study we solve the full Navier-Stokes and continuity equations numerically with a finite difference method to investigate flow separation effects induced by the propagation of time-periodic water waves over a submerged rectangular obstacle. Water surface elevations and fluid velocities were obtained for a range of non-breaking wave conditions. Performance of the numerical model is evaluated by comparing the results of the numerical computations with available experimental measurements. The computed wave profiles at varios locations and local flow fields around the submerged obstacle agree favorably with experimental observations. The results indicate that the formation and growth of separation region respond directly to the wave transformation over the submerged obstacle, leading to a variety of different eddy patterns. |
本系統中英文摘要資訊取自各篇刊載內容。